support windows

[llimllib]

Currently, we use unix-only stuff to get the terminal width. How do you replicate that on windows?

./main.go:143:36: undefined: syscall.SYS_IOCTL
./main.go:144:23: undefined: syscall.TIOCGWINSZ
./main.go:144:36: not enough arguments in call to syscall.Syscall
	have (unknown type, uintptr, unknown type, uintptr)
	want (uintptr, uintptr, uintptr, uintptr, uintptr)

does anybody want to use this on windows?

[llimllib]

I think getting the window size might look something like this.

I'll need to break my code into files separated by build flags.